TABLE 2.
Infectivities of immune and control BALB/c mice for xenodiagnostic ticks following homologous and heterologous challenge
| Group no. | Original isolate | Challenge isolate | 14 days PCH
|
21 days PCH
|
||
|---|---|---|---|---|---|---|
| No. of xenopositive mice (n = 6) | % Ticks infecteda | No. of xenopositive mice (n = 6) | % Ticks infecteda | |||
| 1 | Dawson | None | 0 | 0 | 0 | 0 |
| 2 | Dawson | Dawson | 1 | 0.8 ± 1.6 | 3 | 9.8 ± 19.2 |
| 3 | Dawson | Gaillard | 2 | 11.9 ± 21.5 | 0 | 0 |
| 4 | None | Dawson | 6 | 41.8 ± 12.9 | 6 | 55.2 ± 21.9 |
| 5 | Gaillard | None | 0 | 0 | 0 | 0 |
| 6 | Gaillard | Gaillard | 2 | 9.2 ± 16.1 | 0 | 0 |
| 7 | Gaillard | Dawson | 2 | 6.7 ± 9.8 | 0 | 0 |
| 8 | None | Gaillard | 6 | 40.0 ± 19.8 | 5 | 35.0 ± 20.6 |
a
Percentage of infected xenodiagnostic ticks ± 95% confidence interval.